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EC500 Controller Handbook
Copyright © 2019 Eaton Corporation. All Rights Reserved.
Issue A March 2019
Page 101 of 107
Connector
Type
Purpose
Pin
Description
RS485-L,
Rear Panel
RS-485 #1 (Lower) 4W Serial
Bus
2
Rx+ (IN)
3
Tx+ (Out)
4
Ground, common with CAN Bus
5
-
6
Tx- (Out)
7
0V, Reference
8
-48V DC, power input
RS485-U,
Rear Panel
RJ45
RS-485 #2 (Upper) 4W Serial
Bus
1
Rx- / (IN)
2
Rx+ (IN)
3
Tx+ (Out)
4
Ground, common with CAN Bus
5
-
6
Tx- (Out)
7
0V, Reference
8
-48V DC, power input
RS232, Rear
Panel
DB9F
RS-232 Serial Interface,
modem specific pin out
1
TxD (Out)
2
-
3
-
4
CTS
5
Ground, common with controller
6
RTS
7
Modem PWR Disable
8
RxD (In)
9
-